* {
    margin: 0;
    padding: 0;
}
a {
    text-decoration: none;
}
li {
    list-style: none;
}
.nav,.H_box,.T_box,.F_box {
    width: 1080px;
    margin: auto;
}
/* 最大的外框样式 */
.B_box {
   width: 100%;
}
/* 导航栏样式 */
.nav_l,.nav_c,.nav_r{
    height: 50px;
    background-color: #FFF;
}
.nav {
    position: relative;
    width: 100%;
    height: 50px;
    background-color: red;
    
}
/* 左边部分的样式 */
.nav_l {
    float: left;
    width: 600px;
    
}
/* logo样式 */
.nav_l .logo {
    float: left;
    width: 180px;
    height: 50px;
    padding-left: 20px;
    background-color: pink;
}
.nav_l ul {
    float: right;
    height: 20px;
    line-height: 20px;
    margin-top: 10px;
}
.nav_l ul li {
    float: left;
    width: 75px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    list-style: none;
    background-color: skyblue;
}
/* 中间部分的样式 */
.nav_c {
    float: left;
    width: 400px;
    margin-left: 70px;
}
.nav_c .search {
    float: left;
    width: 300px;
    height: 30px;
    line-height: 30px;
    margin-top: 10px;
    margin-right: 5px;
    border: 2px solid #000;
}
.nav_c .search input {
    width: 260px;
    height: 20px;
    border : 0;
    background:none;  
	outline:none; 
    font-size: 18px;
    margin-left: 3px;
}
.nav_c .search span {
    float: left;
    display: inline-block;
    width: 30px;
    height: 30px;
    border-right: 1px solid #000;
    padding: auto;
}
.nav_c .search span img {
    width: 30px;
}
.nav_c .button {
    margin-top: 10px;
}
.nav_c .button a {
    display: inline-block;
    width: 50px;
    height: 33px;
    text-align: center;
    line-height: 30px;
    color: #000;
    font-weight: 700;
    background-color: skyblue;
}
/* 时间样式 */
.time {
    position: fixed;
    z-index: 1;
    right: 400px;
}
/* 右边部分的样式 */
.nav_r {
    float: right;
    width: 400px;
}
.nav_r .login {
    float: left;
    margin-top: 10px;
}
.login #lg,#registered {
    display: inline-block;
    width: 45px;
    height: 30px;
    line-height: 30px;
    font-weight: bold;
    text-align: center;
}
.login #lg {
    color: #FFF;
    background-color: rgb(65, 63, 63);
}
.login #registered {
    color: #000;
    background-color: skyblue;
    margin-left: 20px;
}
.nav_r .image {
    float: left;
    margin-top: 6px;
    margin-left: 35px;
}
.image span {
    display: inline-block;
    width: 35px;
    height: 35px;
    border-radius: 2em;
    background-color: #000;
}
.nav_r .user {
    float: left;
    padding-left: 5px;
}
.user .name {
    display: inline-block;
    height: 50px;
    line-height: 45px;

}
.nav_r .end {
    float: right;
    margin-top: 10px;
    margin-right: 20px;
}
.end a {
    display: inline-block;
    color: #000;
    width: 40px;
    height: 35px;
    line-height: 35px;
    text-align: center;
    font-size: 18px;
    background-color: rgb(172, 165, 165);
}
/* 头部滚动栏样式 */
.H_box {
    height: 300px;
    margin-top: 10px;
    background-color: blue;
}
.H_box_img {
    position: relative;
    width: 800px;
    height: 300px;
    margin: auto;
    background-size: 100% 100%;
    overflow: hidden;
    z-index: 0;
}
.H_box_img .r {
    position: absolute;
    right: 0;
    top: 50%;
    margin-top: -27.5px;
    width: 25px;
    height: 70px;
    line-height: 70px;
    color: #fff;
    text-align: right;
    font-size: 30px;
    background-color: rgba(0,0,0,.3);
    border-radius: 10em 0 0 10em;
    cursor: pointer;
}
.H_box_img .l {
    position: absolute;
    left: 0;
    top: 50%;
    margin-top: -27.5px;
    width: 25px;
    height: 70px;
    line-height: 70px;
    color: #fff;
    text-align: left;
    font-size: 30px;
    background-color: rgba(0,0,0,.3);
    border-radius: 0 10em 10em 0;
    cursor: pointer;
}
.H_box_img .images {
    position: relative;
    width: 3200px;
}
.H_box_img .images li {
    position: relative;
    float: left;
    width: 800px;
    height: 300px;
    cursor: pointer;
    z-index: -1;
}
/* 点 */
.H_box_img .color {
    background-color: #fff;
}
.radio {
    position: absolute;
    left: 50%;
    margin-left: -50px;
    bottom: 30px;
    width: 120px;
    height: 15px;
    line-height: 15px;
    background-color: rgba(255, 255, 255, .3);;
    border-radius: 2em;
}
.radio ul {
   margin-left: 5px;
   margin: 2.5px;
}
.radio ul li {
    float: left;
    width: 10px;
    height: 10px;
    margin-left: 7.8px;
    border-radius: 2em;
    background-color: #000;
    cursor: pointer;
}
.H_box_img .gg {
    position: absolute;
    bottom: 1px;
    left: 2px;
    font-size: 12px;
    background-color: rgba(0,0,0,.4);
    border-radius: 1em;
}
.H_box_img .gg a {
    color: rgba(255,255,255,.5);
}
/* 网页主要内容样式 */
.T_box {
    height: 800px;
    background-color: pink;
}
/* 尾部样式 */
.F_box {
    height: 100px;
    background-color: #000;
}